Some comments on the use of the forward angle dissymmetry method in Rayleigh's region

1974 ◽  
Vol 39 (3) ◽  
pp. 827-828 ◽  
Author(s):  
B. Sedláček ◽  
J. Jokl
Keyword(s):  
Forward Angle

scholarly journals Design and Analysis of Posterior Semicircular Canal BPPV Diagnostic Test Based on Physical Simulation

2021 ◽  
Author(s):  
Xiaokai Yang ◽  
Qiancheng Yang ◽  
Zhaobang Liu
Keyword(s):  
Diagnostic Test ◽  
Semicircular Canal ◽  
Physical Simulation ◽  
Normal Vector ◽  
Forward Angle ◽  
Unit Normal Vector ◽  
Posterior Semicircular Canal ◽  
Average Value ◽  
Crista Ampullaris ◽  
Unit Normal

Abstract To discusses and analyzes how to realize the design of posterior semicircular canal BPPV diagnostic maneuver. First, measure the spatial attitude of the human semicircular canal, establish a BPPV virtual simulation platform, then analyze the key positions of the maneuver, and finally design a new diagnostic maneuver according to the demand, and perform physical simulation verification. The average value of the unit normal vector of the right posterior semicircular plane is [ 0.660, 0.702, 0.266], after rotate -46.8 ° around Z axis and 15.4 ° around Y axis, it parallel to the X axis. After that, when the tilt back angle reaches 70 °, the free otoconia in the left utricle will fall into the common crus; when bend forward 53.3°, the unit normal vector of the crista ampullaris plane of the posterior semicircular canal to the XY plane; when bend forward angle reaches 30°, the otoconia slides to the opening of the ampulla; when bend forward angle reaches 70°, the otoconia slides to the bottom of the crista ampullaris. The shallow pitching Yang maneuver is designed as turn head 45° to the one side, bend forward 45°, tilt back 90°, and bend forward 90°. The deep pitching Yang maneuver is designed as bend forward 90°, turn head 45° to one side, tilt back 135°, and bend forward 90°. A new posterior semicircular BPPV diagnostic test is designed to make the induced nystagmus have the characteristics of long latency, reversal, and repeatability, will not cause the inhibitory stimulation of the contralateral superior semicircular canal, and has good operation fault tolerance, which is of great value for clinical and scientific research.

Cell size, cell cycle, and α-smooth muscle actin expression by primary human lung fibroblasts

1998 ◽  
Vol 275 (5) ◽  
pp. L998-L1005 ◽  
Author(s):  
Bruce D. Uhal ◽  
Carlos Ramos ◽  
Iravati Joshi ◽  
Antonio Bifero ◽  
Annie Pardo ◽  
...  
Keyword(s):  
Human Lung ◽  
Smooth Muscle Actin ◽  
Lung Fibroblasts ◽  
Light Scatter ◽  
Forward Angle ◽  
Muscle Actin ◽  
Cell Sorter ◽  
Human Lung Fibroblasts ◽  
Group Iii

Primary human lung fibroblasts were separated into small ( group I), intermediate ( group II), and large ( group III) subpopulations by unit gravity sedimentation (1 G). The three subsets retained differences in cell size for up to 15 days of primary culture. Flow cytometric (fluorescence-activated cell sorter) measurements of forward-angle light scatter agreed well with fibroblast volume measured by image analysis and confirmed the utility of forward-angle light scatter for discriminating size subpopulations. Group II fibroblasts accumulated most rapidly by 8 days of culture and also contained the greatest proportion of S and G2/M phase cells as determined by fluorescence-activated cell sorter. Fibroblasts that were immunoreactive with antibodies to α-smooth muscle actin (α-SMA) were found only in group III. In situ end labeling of fragmented DNA detected apoptotic cells in both groups II and III, but double labeling for in situ end labeling and α-SMA revealed apoptotic cells in both the α-SMA-positive and -negative populations. These results demonstrate that primary human lung fibroblasts behave as predicted by classic models of cell cycle progression and differentiation. However, they do not support the hypothesis that the expression of α-actin is related to apoptosis. We also describe a simple and reproducible method for the high-yield isolation of human lung fibroblast subsets of differing proliferative potential and phenotype.

Coulomb-nuclear interference in 56 MeV deuteron breakup at extreme forward angle

1995 ◽  
Vol 352 (3-4) ◽  
pp. 197-200 ◽  
Author(s):  
C. Samanta ◽  
Rituparna Kanungo ◽  
Sanjukta Mukherjee ◽  
D.N. Basu
Keyword(s):  
Forward Angle ◽  
Deuteron Breakup ◽  
Nuclear Interference ◽  
Coulomb Nuclear Interference

scholarly journals γZcorrections to forward-angle parity-violatingepscattering

2010 ◽  
Vol 82 (1) ◽  
Author(s):  
A. Sibirtsev ◽  
P. G. Blunden ◽  
W. Melnitchouk ◽  
A. W. Thomas
Keyword(s):  
Forward Angle

Relativistic effects in forward angle proton-nucleus elastic scattering

1988 ◽  
Vol 37 (1) ◽  
pp. 224-230 ◽  
Author(s):  
L. Ray ◽  
G. W. Hoffmann ◽  
M. L. Barlett ◽  
N. Ottenstein
Keyword(s):  
Elastic Scattering ◽  
Relativistic Effects ◽  
Forward Angle

Application of forward-angle light scattering to measured flocculation point of asphaltenes and evaluation of flocks dimensions

1999 ◽  
Author(s):  
Hector M. Gutierrez ◽  
Alberto Fernandez ◽  
Sonia Goncalves Abreu ◽  
Jimmy A. Castillo ◽  
Jannett Hung
Keyword(s):  
Light Scattering ◽  
Forward Angle
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